Two business men Mr. A and Mr. B invested a total of $10,000.00 in a business. the ratio of the amount of their contribution was 3.1.How much did Mr. B invest?

$2500

Step-by-step explanation:

Mr. B investments are equal to 1000,00 X 1/4

1000,00 X 1/4 = 2500

20

step-by-step explanation:

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.